Hemoglobinometer and illuminating device therefor



A. DARE. HEMOGLOBINOMETER AND ILLUMINATING DEVICE THEREFOR.

AILICATION FILED FEB. 24, 1920.

Patented Apr. 25

vin-mess:

' Be it known that I, ARTHUR zen of the United States, residing at Phila;

nuire s'rA'rEsf incurren DARE, or PHILADELPHIA, 215ElmsS'ILVANIA.

1 Y11,414,261. l Y

, To all whom it may con-cem Vdelphia, in the. County of Philadelphia and 1o" V,amount of hemoglobin inhuman andanimal blood and provides for theproper illumina State of'Pennsylvania, have invented new l`and useful Improvements' in Hemoglobinomf solar spectrum' to awgreatextenuis not'Suf;

eters and 'Illuminating Devices Therefor,

ofwhich the following is' a specification.

The linvention'relates to hemoglobinomveters for measuring or determining the tion of the, specimen under observation to permitV of' accurately" determining the color 15.

value in order thataneiiicient reading and accurate result'canAbe-obtained. :Among other'features lthe invention y Coinprehends the us'eof' anfilluminant incon- 'nection With a hemoglobinometer "whereby 20.

the `same intensity ,of vlight can alwaysbe vhadregardless of the times atwhich read- ,ings are taken, 'thus insuring accuracy'in 'determining the amount' of hemoglobin in ,theblood While at the same time with the use .of my device, the readings and deterrninations can bequickly and accuratelyobtained,

also enablingthe `user to perform the operationwith the least amount of troubleWitho-ut .restricting the use ofthefdevicel to 'a dark- 30. y l

'ened` room. f

` accurate results 4in the useY of ahemolobtain the readings ina-darkened room, but

thishasalso been oundlto be impractical,

,indicating .th

fyglobinometer, .the usualdaydight because of its varying intensity and numerous sudden changes, is' a `decidedliy'l l objectionable factor andv therefore, should befexcludedj and subj stituted by a light ofa more constantfnature. the use. of hemoglobinometers, it has been a custom .in connection ,with certain forms not only because ofthe flickering fcandle, b ut .alsobecause of the 'necessity of Vrestricting the ilse of the device to a darkened room in orderto obtain the desired result.

' I aim to provide'an electric light*V lin con.- nection with `a hemoglobinometer in, which the rays of Vlight projected on to and'vthro'ugh 50.y Y value will at all timesbe, of the samefdegree A and intensity and to havethis"lightencl'osed `'in va manner which Willpermit ofthe use of the henioglob'inometer at the bed-side of 55 the specimen and vvthe standardizedcolor thefpatient or'party whose blood is being testedgthus y obviating the necessity ,ofre j Appliation filed Februaryiz'i', lego'. ys`eria1'- 1510.fseoz. j j

DAnn,` a citin .It isf Well knoivnthatin orderV to' obtainA the lreading/v cation,- in whichr similar: characters of reier- ,.ence clen o,t e 'correspondingparts--inallfthe x Y y l A v1 e\vs,=and;in Whichg- 95 olfthese devices to employ candle llglit and l specification of Letters raient iitete p1-.25,"

steering uis-.fase bf' the, een@ ai a iiienea y' roem; i ."Therefore With the knowledge that davlr lightv changesthe colorjg'oi!"blood'-according y60 jto its concentration andthat thefcandleflame,

althoughit'occludes the violetfraysjo'the icient to render the observations '-precise,fI

tiall'y enclosed, or What rnight Ybe termed.- in' camera. Thus in the usegcf a'hemoglohinoineter such I as is the one` Wh'iclrfo'r instance,

known in the trade"'iasthe-.Darefheinoglo-A bino'nieter, 1s substantially illustrated ajndd-k 70 I avfoid theobjectionsincurredpintheuse'.

:of a ind1e,j mmeiyjihe, ightjjicker, the excessive heat generated and the smoke pro- 'f .Y

ducedv by the ,Combustion 'residan-g. in he candle flame. ."Stillfurther[by haviiigthe S0 .electric lampiv .enclosed housing; .and

t as mentioned h erevtff)fore,.1l substantially, in

camera, If obtain a; direct;concentration of a steadyflight upon a'specinienunderobserva! tion andthey color value,scalefsothatfthe 85 hsingle light and vits .projective rays. are 'com` mon ltov the lspecimen,andthefcolo scale, therebyinsuring greate1f.acci ao dra-vingts' 'Cistitubng a parttime spe e Figure-vig-.-Yishorizontal ection'aliview I?" view/ofthelampattachment-hymen,.ze r n f Referringmorefparticularly to -thevielvvs -f it will bea'pparentfto thoseskilledinthe'art, A that the illustrations`s l'1 c vv ahernoglobinom-- 110 v jeterfsubstantially ofjftheliindjknown in agr agrade as the.; Der@ .temoelbinniter Nr poesia;

ioo

f through the-telescopeV two apertures will be v scribed and illustrated in'yUnitedv States Letters Patent No. 1n describing the" hemoglobinometer as illustrated herein, I will merely devote iny-Y ture 18 when looking intor thetelescope' V19 Aand also illuminate the blood held in the pipette 'and which will be seen through the aperture 22 Y,when 'viewed through the.

self generally to the constructional features, layingparticular `stress upon lmy "improves ment and the Inode of attachingthe saine. The hemoglobinometer lis indicated inits entirety by the'nu'meral 10 and comprises ya substantially circular casing 11 )provided with. a side opening or slotr 12with a disk 13 revolubly'carried in the casing 11, lthe disk having a ruby glass portionlt and on .its

periphery provided with graduations 15A whichcan be observedl through the side open- {ing or slot 12. VRotation of the diskis brought about by theuse of a knurled wheel 16 mounted on thecasing and having a portion. extending within the same to have fric- 1 tional contact with a portion of the peripheryA of the disk. Thefdisk 13 may be made of some translucent substance such as porcelain or the like and the ruby lglass vportions 14 formed thereon or secured thereto in any. desired mannerandthe -front of th'ecasing is providedwith a window 17 through which vthe disk13 .maybe'observed, thewindow 17 beingV in line with an aperture 18 in the vrear of the casing so that a telescope 19 1 mounted von'a disk ormember '20, pivoted' to Y the casing 11 at the reaigcan be arranged to align with the window 17 and aperture 18,`

so that with suici'ent light entering the window, the diskcan be observed through the.

telescope andupon rotation will show diiferent red color values through thevaperture 1 8. The casing 11-has an extension21 which is in factachamber, openat the front and the ltop andV provided vwith. anpaperture 22 also. common vto the telescope "19 -whenl the ylatter is in position to permit of viewingrthe y 1 color chart or disk'13. The Chamber formed 'vos by the eXtensionf21`is Vfittedfto receiveablood containing device; or pipette 23. the'latter 'consisting substantially'oftwo plate's24, 25,

Yone of which may bemadeof glass and the `V vother of porcelainand so associated that a "drop or particle of blood can be retained between `the plates, these plates beingsecured in a suitable holder 26 which in fact is a part `of the pipette'with a screw 27 'having a knurled head `28 threaded on to lthe, holder to engage one of the .platesand secure the vplates in Vthe holder andrelativelyl rigid. Now whentheholder yis disposed in the chamber ot theextension 21 `and slid into position it will be"apparent that the blood between Vthe plates. .will V be brought into alignment withy the aperture 22, and thus when Vviewed seen one of the aperturesbeing the aperture118and thejo'ther the aperture 22, with 663,536. Therefore tures are common to'thetelescope. y

In order to illuminate and yclearly show tlirou-ghthe aperture 22, bothvof which aperup that portion of the ruby' glass of the disk which will be viewed through the aperor device and which housing provides' a ,Y

lamp-chamber 30v for the disposition lOtanV electric-lamp 31, suitably socketed as a`t32,Y

the .housing being vopen at oneend' as at 33 and having thisV open end of a conliguration to lit against a rib or border 34 around the w-iidow17,l the housing at the open Vend also fitting closely; against the extension 21 so as toenc'lose the .ordinarily visible portions of the plates 24, '25, it being underrstoodl that when the housing'v is in position,

V:day-light will be excluded'. and the illuminant or lamp will besubstantia'lly in camera, so that onlyfthe light from' thel lamp Vwill vconstitute 'the vrsource VVof illumination- Vnecessary to a 'proper operation ofilthe Yhem/oglobinomete'r. The housing-29 i'sV'carried on a stem VoruprightT35 to thelower end or which fis attached inany suitable manner an electric'plug"'36 which together with the manner in which the lamp issocketed as`at 32, will provide suitable connec` tion with the lamp jfor'they .electric current. The plug .36 of course has electric wires 37attached thereto' and these in turn are connected to an electricplug 38 'Which'may be inthe form of a current reducer or'any known ,or desired form, so that the plugy can be attachedfto the 'usual electric lighting circuit found in .buildings and thus pro- Secured in any `suitable manner to ftherstc'm 35 is a clamp'39torming a part of a` holder V,4:0 "which in turni includes a squared y shank 41" adapted tofbe receivedr 1n la squared opening 4-2 in an ear 43 'projecting from thev periphery ofthe casing 11 and in order to. facilitateffthe attachment of the lilluminating device to the hemoglobinometer, l' VI'Jreferably providev the' housing 29 with a'gi'ooved 'portionpor surface 44 sol that' when. the housingfis 'ar-v I ranged in position and jthe pipette'23 is f A.

disposed inthe chamber `ot the'extension 21, the knur'led head" 28 of the screw 2,7 will engage' with vthe'sur'liace ofithe grooved Aportion tgrof the housingkandl thus serve f to not only insure the properdis'posi'tion of the pipette in position to bring the blood inalignmentfwith the aperture 22, but also result in va rictional lcontact of the pipette with the housing thereby securing the .illu-I" minating attachment v-or device more" securely to the'hemoglobinometer;With 'this arrangement the illuminating attachment will be supported'by thefholder 40 andthe engagement 'of @the knurled @head lof the" screw 27" making in--i'factf a substantially rigid structure; with the hemoglobinometer, 1 while at Athe same timethisformv et connec. tion andlnganne'r of applying 'the Villuminatf` ing device to the hemoglobinometer l provides the necessary construction for insuring the proper positioning of the pipette so that the specimenoin blood will be brought into proper valignment so that it can be viewed through .the telescope. It'will of coursebe apparent that the stemmay be conveniently employed as a handle for holding the hemoglobinometer and that the" illuminating attachment when applied tok the hemoglobinometerasstated, provides substantially aimitary-structure.-

lt will now be apparent that theuopen .end of the housing for` the electriclamp is common tothe two Vapertures 18, 2250 that when viewedy through the telescope the particular part of thefruby glass portion aligningfw'ithgtheaperture 18 andthe blood specimen aligning with the aperturev 22,..

'i f will both beseen at the `same time through Vso the telescope and will'both be illuminated by the electric lamp in the housingandln order that a maximum illumination may be insured, the interior'of l,the housing can l. be colored or polished to'providea reflecting surface so that the rays of lightfrom the lamp will be projectedtoward the apertures and through the translucentruby glass portion' and the bloodspecimem I Aam aware that electric lampshave been i used heretofore for the purposeof illuminating certain surfaces, objects, or the like, particularly .in connection with measuring and computing devices, but it should be obfk served that in the present instance I'provide asinffle electric lamp, carried in camera and so arranged inconnection with thehemoglobinometer that the singlev electriclamp serves as any illuminant for both the blood sp eci'nen and the color value chart ori-disk, therays from the lamp being commontothose pormen underI observation. l

As mentioned heretofore-the pipette serves' i' -not only as the means for holding the bloodfV 60,

tions of the hemoglobinometer which areto be viewed through the telescope sovthat wheny the color value of the disk as seen through the telescope, matches the particular color of the blood specimen as viewed through the telescope, the graduation disclosed invv the said opening 12 of the casingwill determine the amountof hemoglobin in the blood Specispecimen and orbringing the blood specimen into position for observation, but the lrnurled head 28 of the screw 27 ,constituting a part of the ipette valso engages 'with' the housing to facilitate the engagement ofthe housing` in rigid position/with the casing. f

the desired. result. .v l

Having described my inventiom'l claimfe- Y [110. Q binometer including a-Y Acasing'. having a plu? rality ofviewingy apertures 'and a ytelescope Y common to saidapertures, ofanextensionon Y, the casing and provided with.' -a v squared tially withdrawthe pipette' from :the Scham? ber ofl theeXtensiomfthe pipette'at one? end is provided with a' hand'l'etiwhich. mayfbe l inl. the nature off an eyeletand which can: be conveniently gripped fori the 'purposeofl withdrawing the pipette from` the chamber of the extension or forinserting the pipette; i

Byhavingthe handle inthe form of Aeyelet v` ..75

the' 'handle also provides for'. conveniently vhanging upa large numberofthe pipettes on'a` rod lor wire kin the laboratory whenthev pipettes are not inruse.

from the illuminating member, .namely 'the known that-fin instruments wheregreat pre'- `of1the observation of certain of the rayso It will` be *noted that in aninstrument of l. i

the character described fthe -rays f of :light go li'gh'tfhut also lbecauseofthe irregularity`v `oftheraysoflight due" to achange of the and through the specimen andthe-color. scale that the viewing apparatus, namely'the telescope, vbe 'ina rposition -to observe the focus. With :this in mind it is essentialthat y the rays of light" be transmitted directlytof'ilv l' color values when the light is directly trans-x` 'l mitted to the parts under observation.- Fur-y l y 10c@ sary toeXcludedaylight and vto provide "an ther-to insure accurate readings, it is necesilluminant 'which willfe'mit a steadylight devoid ofany ilickerfand -it is'for this reason 'that' I have in.. my devic` ef,garrangedl` the illuv minant in camera, shutting o utf all daylight Y and providing by means of the electric lamp,j

a steady light ofsutcient intensity to insure 1.An illuminating device for ahomogloopening, a housing openv atone end', illuminatmg 4means carriedinthe housing and a holder for the housing havingasquared por-i 'i i l tion fitting intothe squared opening the f. y

ment withsaid'casing so-that the openvlend of the housing will becommon tothe said viewy ing apertures, closing the sameagainstv the intrusion of daylight. H 5

2. The combination withahomog'lobinom-y I eter includinga casing having an opening .extensionto position said housing engage;

therein `for the'iadmission oi light, of a holl lowmemberopen atfone end, means including a Vpin andV socket connection or'securing the 'hollow member infpo'sition, whereby the 'open endlovsad'. member will surround the;

iso

' openingn the/casing and a source oflght positioned .Within the hollow mmber;

closing tllesourcev olf 'jlglt, a tubular. Vhandle extending from the housngyfan velectric con- ,tact @stille outer 'endfofthe tubularlmndle v and means 'removably oonnetlng the tubular il o l1jandleund.heinoglobinometer'for ronuovalrlyV 'AB-THUR'VDARE. 

